ZnO-Al_2O_3-B_2O_3-SiO_2系微晶玻璃结晶行为及对金刚石磨料的润湿性  

Crystallization of ZABS glass and its wettability on diamond abrasive

作　　者：栾时勋 傅仁利[1] 朱海洋 刘启龙 李玉军 LUAN Shixun;FU Renli;ZHU Haiyang;LIU Qilong;LI Yujun(College of Materials Science and Technology,Nanjing University of Aeronautics and Nanjing 210016,China;Sinoteng Silica Materials Technology(Jiangsu)Co.,Ltd.,Xinyi 221400,Jiangsu,China;Jiangsu Kaida Slica Co.,Ltd.,Xinyi 221400,niaigsu,China)

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016 [2]江苏中腾石英材料科技有限公司,江苏新沂221400 [3]江苏凯达石英有限公司,江苏新沂221400

出　　处：《金刚石与磨料磨具工程》2018年第2期26-31,36,共7页Diamond & Abrasives Engineering

基　　金：江苏省重点研发计划资助项目(BE2016050);江苏高校优势学科建设工程资助项目

摘　　要：为改良微晶玻璃结合剂,以熔融法制备锌铝硼硅系微晶玻璃,研究硼硅比和烧结工艺对其热学、力学性能,析晶行为,显微结构及对磨料的润湿性的影响。发现:硼含量增多,锌铝硼硅系玻璃的热膨胀系数升高、耐热性下降、抗弯强度先升高后降低;硼含量过高时,结合剂完全包覆磨料,不利于磨削加工。另一方面,硅含量增多,玻璃的黏度增大、对磨料的润湿性能变差;硅含量过高时,试样抗弯强度不足。ZABS系微晶玻璃的最佳配比w_B∶w_(Si)=1∶1。热处理工艺为710℃时保温2h,得到的试样的热膨胀系数为5.132 7×10^(-6)℃^(-1),抗弯强度达78 MPa,对磨料的润湿性好。To modify glass-ceramic bond,Zn()-Al2O3-P2O3-SiO2(ZAPS)glass was prepared by conventional melting method.The influence of boron-silicon ratio and sintering process on its thermal and mechanical properties,as well as crystallizing behavior was discussed.The microstructure of the glass and its wettability on diamond abrasive were studied.Results show that with increased boron content,the thermal expansion coefficient of glass increases and its thermal resistance decreases,while bending strength first increases and then decreases.Too much boron will make the bond cover the grain entirely,which is bad for grinding.It is also found that with increased silicon content,the viscosity of glass increases,thus leading to poor wettability to grains.Too much silicon leads to poor bending strength.In conclusion,the best boron-silicon ratio of ZAPS glass is 1:1 in weight,and the optimized heat treatment is 710°C for 2 h.The glass would have a thermal expansion coefficient of 5.1327 X 106°C 1 and a bending strength of 78 MPa,as well as good wettability to grains.

关 键 词：ZnO-Al2O3-B2O3-SiO2微晶玻璃 析晶过程 显微结构 热膨胀系数 抗弯强度 润湿性 

分 类 号：TG58[金属学及工艺—金属切削加工及机床]